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tuanpbc
2 năm trước
Đốt cháy hoàn toàn axit cacboxylic A bằng lượng vừa đủ oxi được hỗn hợp (khí và hơi) có tỉ khối so với H2 là 15,5. A là axit: A. đơn chức no, mạch hở. B. đơn chức có 1 nối đôi (C=C), mạch hở. C. đa chức no, mạch hở. D. axit no,mạch hở, hai chức,
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